/Engine/Source/Runtime/InteractiveToolsFramework/Public/BaseTools/MeshSurfacePointTool.h
Check if, given the current scene state, a new instance of this builder's Tool can be created
true if a single mesh source can be found in the active selection
virtual bool CanBuildTool ( const [FToolBuilderState](API\Runtime\InteractiveToolsFramework\FToolBuilderState) & SceneState ) const